Question

请帮我分析一下句子的结构，不是很明白。

As you are aware, what a person physically has is but a human body that's vulnerable
when exposed to the elements.

Answer 1

As you are aware 非限定性定语从句
what a person physically has 主语从句
is but 系词
a human body 表语
that's vulnerable 定语从句（修饰先行词body）
when exposed to the elements时间状语从句

供参考

Answer 2

【翻译】如你所知，一个人完全拥有的 // 只不过是//在大自然的风雨雷电等自然威力中很容易受伤的躯体。
as you are aware,状语从句，修饰整个句子
what a person physically has主语从句，其中physically考熟词生意，意思是完全地，修饰has
is but, 谓语部分，其中but考熟词生意，意思是仅仅，修饰is
a human body that's vulnerable when exposed to the elements表语,其中that‘s vlunerable是定语从句，修饰body； when exposed to the elements.是时间状语从句，修饰that’s vluerable这件事，
exposed to the elements = the body is exposed to the elements.省略了the body is

Answer 3

As you are aware（方式状语）, what a person physically has（主语从句） is but a human body （系表结构）that's vulnerable（定语从句） when exposed to the elements.（时间状语）
相信你能理解赞同吧！祝你进步！